Shock absorbing caster



FIG. 1 is a perspective view of a shock absorbing caster, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right-hand view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a left-hand view thereof. 

The ornamental design for a shock absorbing caster, as shown and described. 